I am running a 2-level random intercept logistic model using
gllamm.When I use gllapred
with the mu option, and then take the mean of the
observed and predicted response variable (binary) - the means are the
same.When I use the linpred option with gllapred, and
then use convert the linear predictor to a probability, the means of the
observed and and the predicted response are slightly
different.According to the gllapred documentation, the linpred
option includes both the random and fixed parts.

Why the difference in means when using the linpred option vs the mu option??